h8300: Assembly headers

Signed-off-by: Yoshinori Sato <ysato@users.sourceforge.jp>

1 files changed, 96 insertions, 0 deletions

diff --git a/arch/h8300/include/asm/irqflags.h b/arch/h8300/include/asm/irqflags.h
new file mode 100644
index 000000000000..5e1e3242e470
--- /dev/null
+++ b/arch/h8300/include/asm/irqflags.h
@@ -0,0 +1,96 @@
+#ifndef _H8300_IRQFLAGS_H
+#define _H8300_IRQFLAGS_H
+
+#ifdef CONFIG_CPU_H8300H
+typedef unsigned char h8300flags;
+
+static inline h8300flags arch_local_save_flags(void)
+{
+	h8300flags flags;
+
+	__asm__ volatile ("stc ccr,%w0" : "=r" (flags));
+	return flags;
+}
+
+static inline void arch_local_irq_disable(void)
+{
+	__asm__ volatile ("orc  #0xc0,ccr");
+}
+
+static inline void arch_local_irq_enable(void)
+{
+	__asm__ volatile ("andc #0x3f,ccr");
+}
+
+static inline h8300flags arch_local_irq_save(void)
+{
+	h8300flags flags;
+
+	__asm__ volatile ("stc ccr,%w0\n\t"
+		      "orc  #0xc0,ccr" : "=r" (flags));
+	return flags;
+}
+
+static inline void arch_local_irq_restore(h8300flags flags)
+{
+	__asm__ volatile ("ldc %w0,ccr" : : "r" (flags) : "cc");
+}
+
+static inline int arch_irqs_disabled_flags(unsigned long flags)
+{
+	return (flags & 0xc0) == 0xc0;
+}
+#endif
+#ifdef CONFIG_CPU_H8S
+typedef unsigned short h8300flags;
+
+static inline h8300flags arch_local_save_flags(void)
+{
+	h8300flags flags;
+
+	__asm__ volatile ("stc ccr,%w0\n\tstc exr,%x0" : "=r" (flags));
+	return flags;
+}
+
+static inline void arch_local_irq_disable(void)
+{
+	__asm__ volatile ("orc #0x80,ccr\n\t");
+}
+
+static inline void arch_local_irq_enable(void)
+{
+	__asm__ volatile ("andc #0x7f,ccr\n\t"
+		      "andc #0xf0,exr\n\t");
+}
+
+static inline h8300flags arch_local_irq_save(void)
+{
+	h8300flags flags;
+
+	__asm__ volatile ("stc ccr,%w0\n\t"
+		      "stc exr,%x0\n\t"
+		      "orc  #0x80,ccr\n\t"
+		      : "=r" (flags));
+	return flags;
+}
+
+static inline void arch_local_irq_restore(h8300flags flags)
+{
+	__asm__ volatile ("ldc %w0,ccr\n\t"
+		      "ldc %x0,exr"
+		      : : "r" (flags) : "cc");
+}
+
+static inline int arch_irqs_disabled_flags(h8300flags flags)
+{
+	return (flags & 0x0080) == 0x0080;
+}
+
+#endif
+
+static inline int arch_irqs_disabled(void)
+{
+	return arch_irqs_disabled_flags(arch_local_save_flags());
+}
+
+#endif /* _H8300_IRQFLAGS_H */